The Pöstleinsdorfer Schlosspark is a really, really nice place to be and chill out in a quiet and…read morewide green area. We really enjoyed the peace of this beautiful park.
Along the way (well laid out and easy to walk on), we saw a lot of dears running in the forest (part if the Urwald, the oldest forest of Vienna) or resting on the green-field sites, contemplating them was amazing!
But you are not allowed to walk on the fields, they are kept as "Futterwiese", meaning "feed meadow". Don't worry, there are plenty of benches and nice sites within the park :)
It is a bit far from the center of Vienna (endstation of the strassenbahn 41) but it keeps the tourists away and will assure you a peaceful time in a beautiful area.